Reduce MSBuild complexity checks

According to the docs, the only keyword that supports the kind of 
Boolean or branching complexity used for other languages is the
`Condition` keyword. Even the Choose and When elements depend
on some element containing a Condition attribute.

https://learn.microsoft.com/en-us/visualstudio/msbuild/msbuild-conditions?view=vs-2022

https://learn.microsoft.com/en-us/visualstudio/msbuild/msbuild-conditional-constructs?view=vs-2022

languages.json

@@ -4133,17 +4133,7 @@
   },
   "MSBuild": {
     "complexitychecks": [
-      "for ",
-      "for(",
-      "if ",
-      "if(",
-      "switch ",
-      "while ",
-      "else ",
-      "|| ",
-      "&& ",
-      "!= ",
-      "== "
+      "Condition"
     ],
     "extensions": [
       "csproj",